* [PATCH v1 0/1] target/microblaze: mbar: Trap sleeps from user-space
@ 2020-08-17 17:30 Edgar E. Iglesias
2020-08-17 17:30 ` [PATCH v1 1/1] " Edgar E. Iglesias
0 siblings, 1 reply; 3+ messages in thread
From: Edgar E. Iglesias @ 2020-08-17 17:30 UTC (permalink / raw)
To: qemu-devel
Cc: figlesia, peter.maydell, sstabellini, edgar.iglesias,
sai.pavan.boddu, frasse.iglesias, alistair, richard.henderson,
frederic.konrad, qemu-arm, philmd, luc.michel
From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>
As suggested by Richard, trap mbar/sleeps from user-space.
Cheers,
Edgar
Edgar E. Iglesias (1):
target/microblaze: mbar: Trap sleeps from user-space
target/microblaze/translate.c | 5 +++++
1 file changed, 5 insertions(+)
--
2.25.1
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH v1 1/1] target/microblaze: mbar: Trap sleeps from user-space
2020-08-17 17:30 [PATCH v1 0/1] target/microblaze: mbar: Trap sleeps from user-space Edgar E. Iglesias
@ 2020-08-17 17:30 ` Edgar E. Iglesias
2020-08-18 0:06 ` Richard Henderson
0 siblings, 1 reply; 3+ messages in thread
From: Edgar E. Iglesias @ 2020-08-17 17:30 UTC (permalink / raw)
To: qemu-devel
Cc: figlesia, peter.maydell, sstabellini, edgar.iglesias,
sai.pavan.boddu, frasse.iglesias, alistair, richard.henderson,
frederic.konrad, qemu-arm, philmd, luc.michel
From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>
Trap mbar-sleeps from user-space.
Reported-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
---
target/microblaze/translate.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c
index 530c15e5ad..a96cb21d96 100644
--- a/target/microblaze/translate.c
+++ b/target/microblaze/translate.c
@@ -1250,6 +1250,11 @@ static void dec_br(DisasContext *dc)
LOG_DIS("sleep\n");
+ if (trap_userspace(dc, true)) {
+ /* Sleep is a privileged instruction. */
+ return;
+ }
+
t_sync_flags(dc);
tcg_gen_st_i32(tmp_1, cpu_env,
-offsetof(MicroBlazeCPU, env)
--
2.25.1
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH v1 1/1] target/microblaze: mbar: Trap sleeps from user-space
2020-08-17 17:30 ` [PATCH v1 1/1] " Edgar E. Iglesias
@ 2020-08-18 0:06 ` Richard Henderson
0 siblings, 0 replies; 3+ messages in thread
From: Richard Henderson @ 2020-08-18 0:06 UTC (permalink / raw)
To: Edgar E. Iglesias, qemu-devel
Cc: figlesia, peter.maydell, sstabellini, edgar.iglesias,
sai.pavan.boddu, frasse.iglesias, alistair, frederic.konrad,
qemu-arm, philmd, luc.michel
On 8/17/20 10:30 AM, Edgar E. Iglesias wrote:
> From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>
>
> Trap mbar-sleeps from user-space.
>
> Reported-by: Richard Henderson <richard.henderson@linaro.org>
> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
> ---
> target/microblaze/translate.c | 5 +++++
> 1 file changed, 5 insertions(+)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
r~
^ permalink raw reply [flat|nested] 3+ messages in thread
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2020-08-17 17:30 ` [PATCH v1 1/1] " Edgar E. Iglesias
2020-08-18 0:06 ` Richard Henderson
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